Chute-closing gate device



W. G. WINSOR, J'R

CHUTE CLOSING GATE DEVICE Nov. 22, 1927. I

INVENTOR. mix Aw Q @2100! J5 Filed Jan. 6; 1 925 ATTORNEYS.

from; and the ing a pair of scribed, and particularly pointed out inPatented Nov. 22, 1927.

UNITED STATES PIA-TENT OFFICE? WILLIAM awmson, 33., 0F raw rucxn'r,nrronn ISLAND. I

cIIurE-c os n'G GATE mnrIorr Application filed January may bemanipulated to. control the flow through its discharge opening.

invention consists of certain novel features of constructlon, as Wlll bemore fully deappended. claim. In the accompanying drawings:

Figure I is a side elevation partly in section illustrating my improved.chute closing unit as applied to the lower end of the chute, the gatebeing shown in dotted lines in posi-.

tion to close the discharge opening therethrough.

Figure 2 is a perspective view of the chute closing unit showing thehead member, with the gate suspended to close the. opening. through thebottom thereof.

Figure 3 1s a central sectional elevation of my improved head member andgate.

' Figure 4 is a central longitudinal section through the head member andgate and showing the operating handle as attached to the gate.

Figure 5 is a perspective view'of the gate plndlits operating handledetached from the sac Figure 6 shows the detached elements.

which are employed for constructing one form of my improved head memberof the closing unit.

It is found in the operation of closure members for chutes and the like,particularly those for controlling chutes employed in conducting suchgranular material as grain, sand, gravel, fine coal and the like. ofadvantage to provide a head member for controlling the opening throughthe chute which may be bolted in position over the endof the chute, thesame being preferably provided with a circular or tapering bottomportion ;to close to be secured to the lower and when With these andother objects in view, the

s, 1926fSeria1'No. 79,699.

wall plate through which a discharge slot or opening is formed; and toprovide a gate member having elongated side arms which are pivotallyconnected to suspend the gate inposition to swing under this circularbody weight of the material-over the discharge opening is supported by,the pivots on which the gate is hungwhere sistance in swinging thegatewhil-e under pressure'of its load is reduced to the minimum'and thenatural tendency of this gate either with or without 'a-load upon it isto H its'normal or closed position the material is being. dischargedswingf'back to through the openingit requires the minimum amount ofpressure to swing the gate to cut ofi' the flow and close the dischargeopening;

and the followingisa detailed description of the present embodiment ofmy invention and showing one construction of chute clos ingunit by meansof which these advantageous results i may be accomplishedWithfrefer'enceto'the drawings, 10*designates the head member of myimproved chute closing unit, which is herein shown as being formed of abottom plate 11 curved on'the arc of a circle and as being provided witha. transverse elongated slot 12 through the bottom portion thereof.

The ends of this arcuate plate are closed by the end wall plates 13connected thereto by a welding operation. Along the opposite upper edgestom plate, I connect the angle bars 15, preferably byawelding'operation, also across the opposite end plates 13 I connect theangle bars 16 preferably by a welding operation and these angle bars areherein shown as be ing provided with bolt holes 17 through which bolts18 may be passed for securing this closing head'unit to the bottom ofthe chute 19.

In order to close this slotted. discharge opening 12 in the bottom ofthe head member, I have formed a gate member 20 having a bottom closureplate 21 with elongated side arms at 23 to receive the pivot pins 24:.

These arms areset to straddle the end of the head-member and to suspendthe clo sure plate 21 beneath the slot 12 therein, this plate beingpreferably sharpened or formedthin at its edges 22 so as, to'cut 119 Vthe opening therethrough. It will be seen that by this construction theby the frictional re- 14 of this arcuate bot- 22 pierced at their upperends as through the granular material in moving the plate to closedposition when the material is flowing rapidly through the dischargeopening 12.

These pivot pins 23L are arranged to eX- tend through the spacer plates25 and through the walls 26 of the angle bars 16 and through the endwalls 13 of the heads and in which position they may be screwed, weldedor otherwise secured.

In order to provide simple means for operating this gate member, I-haveformed a loop-shaped handle 27 having side arms 28 secured to theopposite side arms 22 of the closure gate, which handle serves as a veryconvenient construction to be engaged by a hook or bar by the operatorto either swing it from closure positionto permit the material to flowfrom'the chute and be as readily swung back to closed position to cutoff this flow.

By suspending this gate on pivots at a I point well above the dischargeopening the gate is very easily swung from closing position even whencarrying a full load upon it sheet metal and the parts welded into posi-7 head-member may be formed complete as a single casting, if desired.

My improved unit is very simple and practical in construction and iseffective in its operation and the discharge openingfrom a chute orother storing or conducting member may be nicely controlled and easilyoperated to be opened and permit a. free discharge and as easily closedto shutoff the flow of material therefrom.

The foregoing description is directed solely towards the constructionillustrated, but I desire it to 'be understood that I re serve theprivilege of resorting to all the mechanical changes to which the deviceis susceptible,-the invention being defined and limited only by theterms of the appended claim. 1

I claim: I a

A chute closing unit comprising ahead member having side walls, and anarcuate shaped bottom wall provided with a discharge openingat itslowest point, a pair of arms pivotally'mounted on said side walls,

an arcuate gate member of the same curvature as the bottom wall disposedon the outer convex surface thereof andsupported by said arms, andabail-shaped-operating han dle attached to said arms and'disposedbe lowsaid arcuate gate.

ture. v

WILLIAM G. WIN. QR, JR.

In testimony whereof I ailix my wsigna-

